package netty.simple.groupchat;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.nio.NioEventLoop;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;

/**
 * @ClassName GroupChatServer
 * @Description TODO
 * @Author director吴
 * @Date 2022/3/25 12:47
 * @Version 1.0
 **/
public class GroupChatServer {

    private int port;//监听端口

    public GroupChatServer(int port){
        this.port = port;
    }


    public void run()throws Exception{

        NioEventLoopGroup bossGroup = new NioEventLoopGroup(1);
        NioEventLoopGroup workGroup = new NioEventLoopGroup();

        try {


        ServerBootstrap serverBootstrap = new ServerBootstrap();
        serverBootstrap.group(bossGroup,workGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG,128)
                .childOption(ChannelOption.SO_KEEPALIVE,true)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {
                        //获取pi'peiline
                        ChannelPipeline pipeline = ch.pipeline();
                        //pipeline中加入解码器
                        pipeline.addLast("decoder",new StringDecoder());
                        //pipeline中加入编码器
                        pipeline.addLast("encoder",new StringEncoder());
                        //加入自己的业务处理器
                        pipeline.addLast(new GroupChatServerHandler());
                    }
                });

        System.out.println("netty服务器启动");

        ChannelFuture channelFuture = serverBootstrap.bind(port).sync();


        //监听关闭事件
        channelFuture.channel().closeFuture().sync();

        }finally {
            bossGroup.shutdownGracefully();
            workGroup.shutdownGracefully();
        }


    }

    public static void main(String[] args)throws Exception {

        new GroupChatServer(7000).run();


    }
}
